Turn-table for trolleys.



E. CAMERON.

TURN TABLE FOR TROLLEYS.

urmuumn FILED JUNE 26, 1998.

1,01 8,407, Patented Feb. 2?, 1912.

2 SHEETS-SHEET 1 i V 1 r y 5 o o I Y A ttomeys E. CAMERON.

TURN TABLE FOR TROLLEYS.

. APPLICATION FILVED JUNE 26, 190B. 1,018,407 Patented Feh.27, 1912.

2 SHEETS-SHEET 2. v

z I m I "if A v V u H T I Ihvntor Axtomeys. I

for its particular UNITED STATES PATENT onn on. j

EWAN CAMERON, or BROOKLYN, NEW YORK, AssmNoa TOYJ'OHN nonnar matron, or

BROOKLYN, NEW YORK.

TURN-TABLE FOR TROLLEYS.

Specification of Letters Patent.

To all whom it may concern.

' Be it known thatl, EWAN CAMERON, a citizen of theUnited States, and a residentof the borough of Brooklyn, county of -Kings, and State of. NeW York, have invented a newand useful Turn-Table for Trolleys,'of which the following is a speci fication.

This invention-relates to improvements in turn tables for ov rhead trolleys, and has .ject the simplification of the parts and the reduction of the number of Operations necessary to shift a trolley from one .rail to another.

So far as I am aware, turn tables for trolleys have been shifted by one set of mechanism, with additional mechanism to lock the turn table and additional mechanism to block the trolley upon the turn ta- -ble; all of the separate mechanisms requiring separate manipulation on the part of the operator.

One object of'my invention is .to obviate the necessity of extra movements in looking and unlocking the turn table, and in blocking and unblocking the trolley, which I accomplish by the movement of the same mechanism which moves the turn table;

A further object is to produce a turn table in which the operating mechanism moves with it, and always remains in the same position relative to the moving track section,

.and tothe trolley. This is unimportantadva'ntage particularlyin connection with trolleys which carry their own motive power, and which carry the operator,'as the operator may shift the turn table without dlsmounting from the trolley.

These and further objects will appear:

from the following specification and accompanying drawings, considered together or .-sep arately 9 In the accompanying drawings: Figure 1 I is a plan View of-a-structure embodying'my invention. Fig. 2 is a section on the line, 2'2vof 1. Fig. 3 is a section on the line 3-3 of Fig. 1, being at right angles to Fig.2. Fig. 4 is av detail showing a por tion-of the-structure on. the same section as Fig. 3, but with parts in a difierentposi tion,fthere being certain parts omitted; and Fi% 5 is a plan View of the parts illustrated in ig. 4 in the position there illustrated.

In. all 'of the views like parts'are desigthe U frame 12; and the other end shaft is supported by the rolling The -structure illustrated as embodying the invention is a turn table for connecting four rail 'or track, ends. These rail ends are designated as A, B, C and D. The. rail ends are connected to a ring or annulus 1. This ring as shown in Fig. 2 has a flange 2, which. is riveted or otherwise secured to the top flange of the rails. The ring or annulus'l serves as a means for connecting the rails and holding their ends in properalinement; italso serves as a support for the turn table and its operating mechanism. The turn table includes a rail or track section 3, similar in cross section to the rails A, B, C and D, and of a length slightly less than the distance separating the inner ends of the rails. The rail section 3' is supported on the ring 1 by means of wheels 44, the said wheels supporting a frame 5, to which the rail section is attached. This frame 5 is in the form of a band or bar 6, which is of'the same width as the upper flange of the rail section 3. The bar hasbent-up extremities 7 which carry the axles or supports of the wheels 4. The bent-up extremities-7 are sufficiently long, as shown in Fig. 2, so that the axles ofthe wheels 44 are enough separated to give the necessary stability to the ail section and prevent it from toppling 'vera, The flanges on the wheels hold the rail section and frame 5 firmly in place within the ring 1 yet permit it to' freely pivot around an axis coincident with the axis of the ring. The rail-or track section of the turn table may be brought into alinementwith either the rails A and-C or with the rails B and D, and thus serves to icarr I Patented Feb. 2'7, 1912. Application filed June 26, 1908. Serial No. 440,459. '4 v the trolley 8 and transfer it from 011613811 to another rail at ri ht angles.

The movement of t e turn table is effected by the following mechanism: A toothed rack or'sector 9 is secured to the ring 1 and rests upon the flange 2. This rack is engaged by a beveled shaft 11. his shaft is mounted in bearings'in a U frame 12. The U frame is conpinion 10 which is carried upon a,

nected to the frame 5, above the center of the rail section 3, which coincides with the center of the ring or annulus-1'. One' end of the shaft 11 is supported in the bearin in 05 the engagement of the beveled pinion 10 with the rack 9. The shaft 11 is rotated by m'ea'ns' oif a.

, chain 13, which passes over asprocketivheel qi'nore'than 90-" of the circumference of the.

- ring 1,. This permits the. turn table to move .throu'gh. 90 of the are. Byextending the 15 peripherallength of'the rack, 13. greater de-' gree ofimovement may be 60llred 't0 the turn table.

Ibeveled pinion and the toothed rack in such a manner. that but, one rotation of the beveled pinion" will move the, rail section exhotly 90 or from one rail end to the ad- 'acent' one on. either side. The chain.13

angs down from the sprocket wheel .14 within convenient distance of the operator on the trolley; orflon the ground. As the "s rocket wheel, moves with the turn table to chain remains always at the same dis-.

'tance from the trolley, irrespective of the position of the turn table. p Fort-he purpose of locking the turn table :ag'ainst movement I provide the following mechanism: A finger 15 ispivote'd at .16 to -the bent-up extremity 7 of the frame '5; This fin er-"is "adapted to enga e within- "either the notches 17 or 17. orined in the .ring or annulus 1. shown as90 apart. The fingeris normally kept in engagement with one of the said notches by means of a spring 18. The finger ia'disenga ed from the notch by mechanism which inc udes a lever 19, pivoted, at 20 to 'an. ;upright 21 on the frame 5. Thelever 19 isfiopressed by'means of a carn'22 having agflat portion' 23.- The cam 22 is carried .by the shaft lland is rotated thereby. The

23am such 1; at when the turn table is in coincidence with the rail ends the flat por- 9} ti n will engage'with the lever 19; this will n]. ow thespring 18 toenga e the finger-15 with the notch 17 andwil lock theturn table against movement. Upon the shaft v19 eingrqtated, for the purpose of moving the :55 turn ita'ble,; in the manner described, the

22 will turn in en agementwith the jgver '19 and will causeft e latter to engage "with" the round ortion of the cam. -This "will de ress the ever'19 and disengage the finger rom the notch. The"l e'ver119 will remain depressed until the cam has made a n complete turn 'when the {flat portion again coming into-engagement with the leverwill :permit the spring to lower the'finger.

as; {Eur thepurpose of permitting the rotation inion 10 and cause it to roll I prefer to proportion thesi ze of the The notches arelocation and ro 'ortion of the flat portion" of the shaft 11 to disengage the finger from the notch without. first moving the turn table, a lostfnotion connection is provided.

This lost motion connection comprises a loose connection between the U frame 12 and the frame 5. cured together It Thetwo frames are seshaft ll to artake of a 'certa'in amount of pivotal motion about theaxis of the turn table without moving said turn table," The lost motion will be of sufiicient extent to permit the cam 22 to disengage the finger 15 fromthe notch 17 before the turn table begins to move. It willbe apparentthcrefore that pulling of the chain will first disengage the finger? 15.from a notch 17 and 17 y bolts 24 which pass through elongated slots 25 in the U frame (see Fig. 5 This permitsthe U frame andand unlock the turn table and will then move the turn table about its axis, shifting'the rail section 3 from coincidence with one line of rails to coincide with the other. It is aparent that as. soon as the turn table has een moved and the shaft 11 has made one revolution, the flat portion 23 will again on gage with the lever 19, permitting the spring- 18 to lower the finger 15 into the other notch 17 or 17. The turn table may be reversed by-moving the chain in the other'direction, as is apparent.

For the purpose of blocking the trolley S'upon the rail section While'the latter is being moved, I provide the followingmechanisn1:.This mechanism comprises a frame 26, which extends in a vertical direction on one side of the rail section 3. The frame .'is 0.f general rectangular shape as shown in Figs. 3 and' l, and is pivoted at 27' to the U frame 12. A transverse portion of the frame 26 beyond the point of pivoting engages with a cam 28. This cam '28is.carricd by .theshaft 11, and turns in time with the cam 22, and is in the form of 'a projec- -t1on, located upon the same cam 22 as the flatportion 23 (see Fig. and directly alongsideof the same. The frame 26 may be moved from the solid line'position (Fig.

2) to the dotted line po'sitiom'and when in the dotted line position it will surround one side ofthc trolley and preventit from mov-' ing longitudinally upon the track section-,3. The weight of the frame 26 will cause it to tend to assunie the dotted line position, shown in Fig.- 2.- It is moved to the/solid line position by means of the cam 28 engaging'with the transverse portion of the'frame.

As-tlie cam 28 is directly alongside ofthe flat. portion 23,.t-he' frame 26' will be moved to thefull lineposition, and clear of the trolley when the fingerlfiis in engagement with the notch 17 or 171and the turn table is locked. Furthermore ithe cam 28 moving at the same time as the flat portion 23, W11 turn'the' frame 26in on its pivot and move'it from the dotted line position 'to the these sai d solid line position of Fig. 2 before the turn table moves. This movement will be secured by the same mechanism which unlocks or locks the turn table and will be attained by the movement of the chain 13. It is thus apparent that the turn table is moved, locked and unlocked; and the trolley is blocked or unblocked. upon the rail section by the movem nt of the single chain and that this chain turns with the turn table and is always at the some distance from the trolley when the latter is upon the, turn table. For the purpose of blocking those rail ends that lie at right angles to the rail ends which are in line with the rail section on. the turn table, a frame 29 is carried by the frame 5 and'extends down to a position close to the rail ends which are at right an glcs to the rail section 3.

In accordance with the provisions of the patent statutes, I have described the prin- "ciple of my invention, together with the apparatus which I now consider to represent the best embodiment thereof; but I desire to have it understood that the apparatus shown is merely illustrative and that the invention can be carried out in other ways.

Having now described my invention, what I claim new and desire to secure by Letters Patent, is: I

1. A turntable for a trolley having common operating mechanism for turning the table and for blocking and unblocking the trolley.

Z. n. turn table for a trolley having a sinchain for turning the table and for citing and unblocking the trolley. it turn table for a trolley having movj means, a locking means, and means for .clting the trolley upon the table, all of means being operated by the smile, mechanism.

turn table for a trolley, having a single chain for moving the table, for locking and unlockin, the table, and for block ing and nntlocking the trolley on the table.

i turn table for trolle" having coininon ope ing mechanism for turning the table, lo table, and blocking the trolley on the table, which mechanism turns with the table, I '3. A turn table for trolleys having operating lll'fiCllll'llin'l which includes a fixed rack pi ion secured to and moving with the table, means for locking the table to the rack, and means for blocking the trolley on r the table.

ying operat a fixed rack,

pmion turning a shaft which is connected to and turns the table, means for locking the table to the rack, and means for blocking the trolley on the table.

8. A turn table for trolleys, having means for locking the table against rotation,means for moving the table, such. means including a Wheel and a shaft carried b Y the table, a pivoted frame for preventing movementof the trolley on the table, and. a cam on the shaft for releasing the trolley.

9. A. turn table for trolleys having means for locking the table against rotation, means for moving the table, such means including a Wheel and a shaftcarried by the table, means carried by the table for preventing movement of the trolley on the table, and means carried on the shaft for unlocking the table and trolley.

10. In a conveyer system, a plurality of intersecting tracks; and a turn table for transferring a trolley from one track to another comprising a track section rotatably mounted for alinen'ient with the different intersecting tracks, means for turning said track section, means for blocking and unblocking the trolley duringoperation of the turn table, locking means for securin ferent intersecting tracks, and common operating mechanism for controlling the turning, blocking and locking means.

11. A turn table for trolleys, having turning mechanism which includesa shaft which bodily turns to turn the table, and, locking shaft, there being means to bodily turn and also rotate the shaft.

12. In a conveyer system, a plurality of intersecting tracks; and a turn table for transferring a trolley from one track to another com 'sing a track section rotatably mounte for alinemcnt with the different intersecting tracks, means for turning said track section, and means operated by said turning means for blocking and unblocking the trolley during operation of the turn table.

13. A. turn table for a trolley, having a single chain for moving the table, for locking and unlocking the table, and for blocking and unblockiug the trolley on the table, said chain being carried on the table.

This specification signed. and witnessed i this 24th day of June, 1908.

EVVAN CAMERON.

Witnesses 1 LEONARD H. Drnn, JOHN L. Do'rsoH.

apinion operating on said rack, the said the track section in alinement with the difmechanism actuated by the rotation of the 

